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Chamberlain Liftmaster Security+ 3900PLD - Operator Maintenance; Monthly Maintenance Checks; Annual Maintenance

Chamberlain Liftmaster Security+ 3900PLD
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22
CARE OF YOUR OPERATOR
MAINTENANCE SCHEDULE
Once a Month
Manually operate door. If it is unbalanced or binding, call
a trained door systems technician.
Check to be sure door opens & closes fully. Adjust limits
and/or force if necessary (see Adjustment Steps
1 and 2).
Repeat the safety reverse test. Make any necessary
adjustments (see Adjustment Step 3).
Once a Year
Oil door rollers, bearings and hinges. The operator does
not require additional lubrication. Do not grease the door
tracks.

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